Friction-clutch.



No. 706,660. Patented Aug. l2, |002.

FBICTIUN CLUTCH.

- :'Applicgim; med Feb. 2e, 1902.)

(No Model.) 4 3 Sheets-Sheet I.

ffy/ /6 K x GKW NVENTOR.

Wd/HM B A TTORNE Y 1n: puls msns'co. Naumann.. wAsmNmcm n c Nu.A706,660. v Patented Aug. I2; |902.

E.. HUBER.

FRICTIUN CLUTCH.

[Application led Feb. 28, 1902.; (No Model.) 3 Sheets-Sheet 2.

' W/TNESSES s JNVENTOR, I V l M4] ATTORNEK um no'. wommno., Msmmow. D c.

No. 706,660. Patented Aug. I2, |902. E. HUBER.

FBICTIUN CLUTCH.

(Application led Feb. 96, 1902.)

3 Sheets-Sheet 3,

(.No Model.)

WITNESSES j@ ai IN VEN TOR.

A TTORNEX UNITED STATESl PATENT OFFICE.

EDVARD HUBER, OF MARION, OHIO.

FRlCTlON-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 706,660, dated August12, 1902.

Application iled February 26, 1902. Serial No. 95,778. (No model.)

To all whom/it may concern:

Be it known that I, EDWARD HUBER, a citizen of the United States,residing at"Marion, in the county of Marion and State of Ohio, haveinvented certain new and useful Improvements in Friction-Olutches, ofwhich the following is a specification, reference being, had therein tothe accompanying drawings* This invention relates to friction-clutches,1 and has for its object to provide a clutchwhich shall be simple andinexpensive in construction and efficient in operation.

To these ends the invention consists in certain novel features, which Iwill now proceed to describe and will the nparticularly point out in theclaims.

In the accompanying drawings, Figure lis an elevation of a clutchembodying my invention in one form. Fig. 2 is a vertical sectional viewof the same, taken on theline moc of Fig.

In the said drawings, 1 indicates a shaft onV which is secured afriction wheel or pulley 2, having on the inner face of its rim africtionsurface 3, terminating in a radial shoulder 4C.

5 indicates a pinion loosely mounted on the shaft and having projectingfrom one of its faces clutch projections 6, which engage cor--responding notches or recesses 7 in the collar 8, which is formed in onepiece with the hub or spider 9. ing lever 10, connected to them in theusual manner, and I prefer to interpose between the hub and the pinion5, so that it is inclosed by the collar 8, a coiled spring 11. The hubor spider 9 is provided with rigid radial arms 12, terminating inguideways 13, which eX- tend transversely ot' the arms and parallel withthe shaft 1. p

14. indicates the shoe as a whole, composed of the metal body 15 andwooden shoe proper or friction-surface, 16, which is shaped to fit thefriction-surface 3 of the friction-wheel 2. The shoe 14. is providedwith guideways 17, which fit upon the guideways 13 in such a Way as toprevent lateral displacement of the The hub and collar have a shiftishoes relatively to the arms 12, while atthe same time permitting theshoe to move radially in and out and in a direction parallel with theshaft. The guideways 17 are also preferably provided with terminal stops18,

,which may abut against the ends of the ways 13 tovlimit the motion ofthe shoes relatively tothearmsinvone direction. Each shoe is .connectedwith the corresponding radial arni by'means ofa toggle-arm 19, pivotedbetween lugs20 on the radial arm and between similar lugs 21 on theshoe. The toggle-arms eX- 4tend in? opposite directions from the huh 9,there being one for each radial arm 12, and

each toggle-arm is preferably constructed of two parts or sectionshaving their adjacent l.ends oppositely threaded and connected by aright and left `threaded sleeve, vby means of `which their length maybeadj usted as desired.

Y ASo farasthe connectionbetween the shoes and rthe radial arms of thespider have been `described the shoes are free to move in and outrelatively to the` shaft and radial arms and also transverselyrelatively to the radial arms in a direction longitudinal of the shaft.

-Thesemotions are, however, controlled and regulated by springsconnecting the arms `-and shoes, and for this purpose I prefer to employthe particular form of springs shown. From the hub, there extends ineach direction `parallel with each radial arrn and on each side thereofa flat spring 22, secured to the hub at its inner end and to the shoe atits outer end and having between its ends a U- shaped bend or loop 23.Preferably the two kspringsonthe same side of the hub are made Vin asingle piece, as shown. spring .connections may, however, be em- Otherforms of ployed. It will be observed that when the parts are in theposition shown in the drawof the hub and arms 12 toward the friction.

wheel, and said springs will carry the shoes toward the frictionwheeluntil the inner edges of the shoes strike against the shon1- der 4 ofthe friction-wheel. As the hub and radial arms continue their motiontoward the friction-wheel the toggle-arms will force the shoes radiallyoutward and cause them to l firmly engage the friction-surface 3 of thep disengaging the clutch the hub and radialy arms are moved in theopposite direction,

whereupon the toggle-arms rst disengage the shoes from thefriction-wheel, the springs aiding in thisdisengagement by their cou-`traction and subsequently serving to withdraw the shoes laterally fromengagement with the friction-wheel in an obvious manner.

It will be seen that the construction is simple and inexpensive and thatthe clutch is ecient and certain in operation.

I do not Wish to be understood as limiting myself to the precise detailsof construction hereinbefore described, as it is obvious that variousmodifications in the details thereof may be made without departing fromthe principle of my invention as defined in the claims. For instance, asalready stated, other forms of spring other than the particular formshown may be employed, and the hub or spider 9 maybe connected with thepinion by means otherthan those described and illustrated.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a friction-clutch, the combination, with av shaft, of afriction-Wheel having an internalannular friction-surface, and means forlimiting the motion of the shoes along the shaft toward thefriction-wheel, a spider movable longitudinally of the shaft and havingradial arms, means for moving said spider ,longitudinally of the shaft,shoes adapted to engage the friction-wheel, said shoes and radialarmsbeing capable of independent movement, toggle-arms pivoted to theradial arms and to the shoes, and centripetally-acting springsconnecting the radial arms and shoes and serving alsoto transmit to theshoes the movement of the radial arms ,longitudinally of the shaft,substantially as described.

2. In a friction-clutch, the combination,

-with a shaft, of a friction-wheel having an Y Ainternal annularfriction-surface, and means for limiting the motion of the shoes alongthe shaft toward the friction-wheel, a spider movable longitudinally onthe shaft and having' radial arms, means for moving said spiderlongitudinally ofthe shaft, shoes adapted to 6o engage thefriction-wheel, said shoes and radial arms being capable of independentmovement, toggle-arms pivoted to the radial arms and to the shoes, andat springs secured at their ends to the spider and shoes respectivelyand having intermediate U-shaped bends, substantially as described.

3. In a friction-clutch, the combination, with a shaft, of afriction-wheel having an internal annular friction-surface, and means 7ofor limiting the motion of the shoes along the shaft toward saidfrictionwheel, a spider movable longitudinally of the shaft and havingradial arms provided with terminal guiding-ways parallel with theshaft,means for moving said spider longitudinally of the shaft, shoes adaptedto engage the friction-wheel and having guiding-ways fitting theguidingways of the radial arms, whereby the shoes are movably supportedon said radial arms, 8o

toggle-arms pivoted to the radial arms and to the shoes, andcentripetallyacting springs connecting the radial arms and shoes andserving also to transmit to the shoes the movement of the radial armslongitudinally of the shaft, substantially as described.

4. In a friction-clutch, the combination, with a shaft, of afriction-Wheel secured thereon and having an internal annularfrictionsurface, and means for limiting the motion 9o of the shoes alongthe shaft toward said friction-wheel, a spider loosely mounted on theshaft, provided with a clutch-collar and having radial arms, means formoving said spider longitudinally of the shaft, shoes adapted to engagethe friction-wheel, said shoes and radial arms being capable ofindependent movement, toggle-arms pivoted to the radial arms andato theshoes, centripetally-acting springs connecting the radial arms and shoesIoo engage the clutch-collar of the spider, and a spring interposedbetween the pinion and spider, substantially as described.

In testimony whereof I affix my signature -in presence of two Witnesses.

EDWARD HUBER.

Witnesses:

F. A. SCHROETER, J. W. KNAPr.

